Harrison County, IN Shrink-Swell Risk

Shrink-swell potential in Harrison County, IN

Moderate

Soil across 53.1% of Harrison County, IN comes back "Moderate" in USDA's shrink-swell data, averaging 4.9% linear extensibility. That's a middle reading: not the sharp swings that crack a foundation outright, but enough that grading and drainage are worth getting right.

What this number does and doesn't tell you

This is a countywide, area-weighted figure across every soil survey map unit in Harrison County, IN - never a reading for one specific parcel. A local geotechnical report, typically $1,000-$5,000 (around $2,700 typical), is the only way to know what one lot in Harrison County will actually do.

Harrison County: the real numbers

Harrison County's soil reading points toward standard foundation practice as the likely outcome, not the exception. A geotechnical report runs $1,000-$5,000, typically around $2,700. Foundation repair, if a specific lot turns out to differ from the county average, runs $5,000-$15,000.

Where this sits nationally

Among the 3,085 rated counties on this site, Harrison County, IN ranks 308 most-constrained nationally, and 1 of 90 within Indiana. Harrison County, IN is 484 square miles with a population of 39,978.

Before you act on this

Orleans Parish, LA carries this site's most-constrained reading. Charles County, MD and Pike County, AR are worth a look for comparison.

How this reading is built, and its real limits · Moisture management: the cheap fix that works on any soil

Elsewhere in Indiana

Every county in Indiana is on this site, including Newton County, IN and Huntington County, IN. The full underlying dataset is downloadable directly, one row per county.